Gas-stove.



No. 733,699. PATENTED JULY 14, .1903,

'1). J. CLARK.

GAS STOVE.

APPLICATION FILED MAR. 1a. 1903.

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PATENTED JULY 14', 1903'.

D. J. CLARK. GAS STOVE. APPLICATION FILED MAR. 13, 1903'.

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GAS'STOVE.

APPLIOATION FILED MAR. 1a. 1903.

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NITED STATES Patented July 14, 1903.

PATENT OFFICE,

DANIEL JOHNSON CLARK, OF JERSEY CITY, NEW JERSEY, ASS IGNOR, BY

MESNE ASSIGNMENTS, TO SECRETARY, OF NEW YORK, N. Y., A COR- PORATlON OFNEW YORK.

GAS-STOVE.

SPECIFICATION forming part of Letters Patent No. 733,699, dated July 14,1903.

Application filed March 13, 1903.

Serial No. 147,599. (No model.)-

sey City, in the county of Hudson and State 7 of New Jersey,haveinvented certain new and useful Improvements in Gas-Stoves, of whichthe following is a specification.

This invention relates to improvements in gas-stoves of the kind thatare especially designed to be attached to the ordinary gasburners forheating purposes.

The object of the invention is to produce a gas-stove that will have thegreatest possible area of heat-radiatin g surface consistent with theleast consumption of gas. This is accomplished by constructing theheating parts of the stove of ball-like formation-that is, providing aninner ball of some fireproof material (for instance, metal, clay, or thelike) and surrounding the ball with a globe of foraminous material,preferably an asbestos fabric that can be heated to the propercondition.

By the above-described arrangement a combustion-chamber is formedbetween the ball and globe, and the gases are admitted to this chamberthrough a Bunsen burner covered by any suitable mantle and provided withgas-outlets interjacent to the ball and globe. The burning gases in thischamber completely envelop the ball and heat the foraminous globe fromwhich the heat is effectually radiated.

If deemed advisable, the stove can be inclosed in any suitablemanner-such, for instance, as by a perforated metal shield or a suitableframe provided with transparent scc-. tions of mica or the like. a

The invention consists in the peculiar construction and arrangement ofparts for producing the desired results, all as hereinafter fullydescribed,and more particularlypointed out in the claims.

In the accompanying drawings, Figure lis a central vertical section ofthe stove. Fig. 2 is a detail plan view of the top clamping device. Fig.3 is'a detail section on the line a a, Fig. 1. Fig. 4 is a detailperspective view of the mantle, and Fig. 5 is a modified form showing adifferent arrangement and a construction of the parts. Figs. 6 and 7show further modified forms of the stove.

All the parts are supported on ahollow baseblock 1, which is adapted tobe connectedwith and form part of a Bunsen burner 2, 5

that is provided with ages-inlet 3and lateral air-inlets 4. This block 1has a reduced extension 10 on the top thereof, into which is screwed orotherwise secured arod 11. Resting on the shoulder 10 is a hemisphericalshell 12, that is adapted to form the lower half of the heatreflectingball. Another hemispherical shell, 13, of reduced diameter engages theinner surface of the lower shell and is securely held by a flanged nut14: engaging the top of rod 11 and pressing against the top of the shellto bind it in position, as shown in Fig. 1. The ball is preferablyconstructed of any suitable imperforate material-for instance, metalwith a polished exterior surface or fire-clay with a glazed surface. Bypolishing or glazing the surface of the ball the heat will be reflectedagainst the inner wall of the surrounding globe and tend to effectuallyincrease the radiation of heat.

The block 1 is provided with a flange 1, against the under side of whichis supported a hemispherical shell of foraminous material. This shell isheld in place against the flange 1 by a washer 22, engaged by a nut 23,that is threaded on the body of the base-block 1. The upper hemisphereof foraminous material is secured to the flanges 14: of the nut 14 bymeans of a flanged clamping-nut 26, that engages the threaded portion ofthe rod 11 and is adapted to be drawn into contact with a washer 25,that is interposed between the flanges of the nuts. The two hemispheresof foraminous material are provided with annular flanges 30, that areengaged by annular rings 31 and by means of which the two hemispheresare bound together by fastening devices 32 to form a globe that isadapted to surround the ball 12. A spherical combustion-chamber 38 isformed between the ball and globe into which flow the gases throughopenings in the mixing-chamber 39 in the lindrical portion 26 of the nut26 and resting on the flange of said nut.

Surrounding the stove proper is a casing or shield 45, that can beconstructed of any suitable material and in any desired manner, but hereshown as composed of asupportingframework 46, 46', and 46", to which areattached sheets of mica 47 to form windows for ornamental purposes andthrough which the condition of the stove may be remarked. This shield isnot essential to the construction of the stove and is not employed toincrease or diminish the heating qualities thereof.

In the practical demonstration of the invention the burning gases willimpinge the foraminous shield, as shown by the course'of the arrows inFig. 1. When the gases reach a point marked X, they will be choked,owing to the fact that the ball and globe are not arranged in concentricrelation to each other. The heat at this point will therefore beincreased, and in order to accommodate such a condition an annularrecess 49 is formed in the ball 12 just above the point marked X, whichincreases the dimensions of the combustionchamber and tends to equalizethe distribution of heat above the point marked X.

It will be noticed by referring to Fig. 1 that when the burner isconstructed in the manner shown the ball and globe are not arranged withconcentric relation to each other. The object of this construction is tomore equally distribute the burning gases against the foraminous globe.It has been discovered by experiment that when the globe and ball are,

in concentric relation to each other the construction of the burner, asshown in Fig. 5, is desirable.

A modified form of the stove is shown in Fig. 5, wherein the ball andthe foraminous globe surrounding said ball are arranged concentricallyand the annular recess in the upper portion of the ball is omitted. Thebaseblock in this form differs from Fig. 1 in that the wire-gauzepermits the flame to directly impinge the bottom of the ball. The ballis held in position against the base-block in the same manner as shownin Fig. 1, but the foraminous globe rests on a shoulder 1 of thebase-block. The top of the globe is engaged by an apertured nut 14,which in turn is engaged by an interiorly-threaded cylinder that forms aflue for the combustion-chamber. The foraminous globe is here shown intwo sections which are held together by the annular rings 31' and 31",the under part of the ring 31 having lips 31, that are adapted to bebent so that they will engage the under ring 31", and thereby secure thesections of the foraminous globe together.

Further modified designs in the general contour of the stove are shownin Figs. 6 and 7, the former showing a heart-shaped stove provided withthe same general detail of construction and arrangement of parts asshown in Figs. 1 and 2 and the latter a stove of oval formation whereinthe general construction and arrangement of parts are the same as in thepreviously-described stove.

Of course it is obvious that changes in the details of construction andpractical application of the stove can be made without in any mannerdeparting from the spirit of the invention.

Having thus described my invention, the following is what I claim as newtherein and desire to secure by Letters Patent:

1. In a stove, the combination of a Bunsen burner, a ball supported onsaid burner, a globe of foraminous material surrounding the ball andforming a combustion-chamber between the ball and globe to receive thegases from the burner.

2. In a stove, the combination of a baseblock, a ball supported thereon,a globe of foraminous material surrounding the ball and forming acombustion-chamber between said ball and globe, and a screen-coveredBunsen burner having gas-outlets into the combustion-chamber, for thepurpose explained.

3. In a stove, the combination of a baseblock, a heat-reflecting ballsupported on the block, a globe of foraminous material surrounding theball to form a combustion-chamber between the ball and globe, and ascreencovered Bunsen burner forming part of the base-block and providedwith gas-outlets interjacent to the ball and globe.

4. In a stove, the combination of a Bunsen burner, an annular recessedball secured thereto, and a globe surrounding the ball and forming acombustion-chamber between the ball and globe and the Bunsen burner soarranged in relation to the ball and globe that the gases are admittedto the combustionchamber.

5. In a stove, the combination of a baseblock,a ball secured thereto, aglobe surrounding the ball and forming a combustion-chambnrner formingpart of the base-block and provided with gas-outlets interjacent to theball and globe, means for securing the ball and globe to the base-block,and a shield or guard inclosing the stove, for the purpose explained.

6. In a stove, the combination of a Bunsen burner, an annular recessedball secured thereto, a globe surrounding the ball and forming acombustion-chamber between the ball and globe and the burner providedwith gas-outlets interjacent to the ball and globe.

'ber between the ball and globe, a Bunsen 7. In a stove, the combinationof a Bunsen burner, a sectionally-constructed ball provided with anannular recess, means for securing the ball to the burner, a globe offoraminous material secured to the burner and surrounding the ball andforming a combustion-chamber between the ball and globe, and clampingdevices engaging the g obe, and provided with openings extending intothe combustion-chamber, said clamping device engaging the ball-holdingmeans to assist in securing the parts in their relative positions.

8. In a stove, the combination of a Bunsen burner forming part of abase-block, a ball supported thereon, means for securing the ball to theblock, a globe of foraminous material surrounding the ball, means forsecuring the globe to the block, and a clamping device engaging theglobe and the ball-holding means to assist in securing the parts intheir relative positions.

9. In a stove, the combination of a ball, a.

globe of foraminous material surrounding the ball to form acombustion-chamber between the ball and globe, a base-block having agasmixing chamber and adapted to support the ball and globe, andprovided with gas-outlets to the combustion-chamber, a screen coveringthe gas-outlets, and a Bunsen burner connected with the base-block, forthe purpose explained.

10. In a stove, the combination of a baseblock, a ball and a globesupported thereon so as to form a combustion-chamber between the balland globe, the base-block having a mixing-chamber and outlets therefromto the combustion-chamber, a Bunsen burner forming part of said block,and ascreen covering the gas-outlets from the mixing-chamber, for thepurpose described.

11. In a stove, the combination of a baseblock having a gas-mixingchamber therein, an annular recessed ball supported thereon, asectionally-constructed foraminous globe surrounding the ball andforming a combustion-chamber between the ball and globe, a Bunsen burnerforming part of the base block, and a screen in the top of themixingchamber covering the gas-outlets to the combustion-chamber, forthe purpose explained.

12. In a stove, the combination of a baseblock, a Bunsen burner forminga part thereof, an annular recessed bail supported on the base-block, aforaminons globe surrounding the ball and supported on the base-block,the foraminous globe constructed in sections having annular flangesthereon, annular rings engaging the flanges on the globe, and means forsecuring the annular flanges and rings together, for the purposedescribed.

13. In a stove, the combination of a baseblock, a Bunsen burner formingpart of said block, a sectionally-constructed ball, asectionally-constructed foraminous globe surrounding the ball, a shieldincasing the ball and globe, and means for supporting said parts intheir relative position, for the purpose explained.

14. In a stove, the combination of a baseblock, a ball supportedthereon, a tie-rod extending through the ball and engaged by anapertured nut to hold the ball in position, a globe surrounding the balland forming a combustion-chamber between. the ball and globe, means forattaching the globe to the base-block, an apertured clamping device onthe tie-rod engaging the globe to secure it to the apertured nut, andsaid apertured nut and clamping device arranged to form a flue for thecombustion-chamber in the manner explained.

15. In a stove, the combination of a baseblock, aball, a globesurrounding the ball and forming a combustion-chamber between the balland globe, means for securing the ball and globe to the base-block, andan apertured nut and an apertured clamping device adapted to engage theglobe to form a flue for the combustion-chamber.

16. In a stove, the combination of a baseblock, a ball, a globesurrounding the ball to form a combustion-chamber between the ball andglobe, a tie-rod extending through the ball, an apertured nut engagingthe ball to hold it in position, and an apertured clamping deviceengaging the globe, tie-rod and apertured nut to hold the parts in theirrelative positions, the apertures in the nuts and clamping deviceforming a flue for the combustion-chamber, as explained.

DANIEL JOHNSON CLARK.

Witnesses:

WILLIAM A. COURTLAND, J. GREEN.

